How can you get more fans on their feet? Add more freedom to your performance— without pushing a single button. Ideal for small and medium stages, GLX-D® Digital Wireless is the easy way to go wireless with less worry.The GLX-D Advanced Digital Wireless Vocal System features intelligent battery rechargeability, and the industry-standard SM58 vocal microphone capsule for warm, clear vocal reproduction and the GLXD4R metal rack mount receiver. For use with GLX-D Advanced Frequency Managers providing robust RF performance, automatic frequency management and increased channel count with exceptional digital audio clarity and seamless operation.